1 /* 2 * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC") 3 * Copyright (C) 1998-2001 Internet Software Consortium. 4 * 5 * Permission to use, copy, modify, and/or distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 11 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 15 * PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 /* $Id: condition.c,v 1.36 2007/06/19 23:47:18 tbox Exp $ */ 19 20 /*! \file */ 21 22 #include <config.h> 23 24 #include <errno.h> 25 26 #include <isc/condition.h> 27 #include <isc/msgs.h> 28 #include <isc/strerror.h> 29 #include <isc/string.h> 30 #include <isc/time.h> 31 #include <isc/util.h> 32 33 isc_result_t isc_condition_waituntil(isc_condition_t * c,isc_mutex_t * m,isc_time_t * t)34 isc_condition_waituntil(isc_condition_t *c, isc_mutex_t *m, isc_time_t *t) { 35 int presult; 36 isc_result_t result; 37 struct timespec ts; 38 char strbuf[ISC_STRERRORSIZE]; 39 40 REQUIRE(c != NULL && m != NULL && t != NULL); 41 42 /* 43 * POSIX defines a timespec's tv_sec as time_t. 44 */ 45 result = isc_time_secondsastimet(t, &ts.tv_sec); 46 if (result != ISC_R_SUCCESS) 47 return (result); 48 49 /*! 50 * POSIX defines a timespec's tv_nsec as long. isc_time_nanoseconds 51 * ensures its return value is < 1 billion, which will fit in a long. 52 */ 53 ts.tv_nsec = (long)isc_time_nanoseconds(t); 54 55 do { 56 #if ISC_MUTEX_PROFILE 57 presult = pthread_cond_timedwait(c, &m->mutex, &ts); 58 #else 59 presult = pthread_cond_timedwait(c, m, &ts); 60 #endif 61 if (presult == 0) 62 return (ISC_R_SUCCESS); 63 if (presult == ETIMEDOUT) 64 return (ISC_R_TIMEDOUT); 65 } while (presult == EINTR); 66 67 isc__strerror(presult, strbuf, sizeof(strbuf)); 68 UNEXPECTED_ERROR(__FILE__, __LINE__, 69 "pthread_cond_timedwait() %s %s", 70 isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL, 71 ISC_MSG_RETURNED, "returned"), 72 strbuf); 73 return (ISC_R_UNEXPECTED); 74 } 75